feat: add happychain testnet (#3282)

* feat: add happychain testnet

* Update happychainTestnet.ts

* Update index.ts

---------

Co-authored-by: aodhgan <[email protected]>
Co-authored-by: jxom <[email protected]>

Author: 3 people

.changeset/rotten-pugs-decide.md

@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added Happychain testnet

src/chains/definitions/happychainTestnet.ts

@@ -0,0 +1,30 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const happychainTestnet = /*#__PURE__*/ defineChain({
+  id: 216,
+  name: 'Happychain Testnet',
+  nativeCurrency: {
+    symbol: 'HAPPY',
+    name: 'HAPPY',
+    decimals: 18,
+  },
+  rpcUrls: {
+    default: {
+      http: ['https://happy-testnet-sepolia.rpc.caldera.xyz/http'],
+      webSocket: ['wss://happy-testnet-sepolia.rpc.caldera.xyz/ws'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Happy Chain Testnet Explorer',
+      url: 'https://happy-testnet-sepolia.explorer.caldera.xyz/',
+    },
+  },
+  contracts: {
+    multicall3: {
+      address: '0xca11bde05977b3631167028862be2a173976ca11',
+      blockCreated: 1,
+    },
+  },
+  testnet: true,
+})

src/chains/index.ts

@@ -197,6 +197,7 @@ export { gravity } from './definitions/gravity.js'
 export { guruNetwork } from './definitions/guruNetwork.js'
 export { guruTestnet } from './definitions/guruTestnet.js'
 export { ham } from './definitions/ham.js'
+export { happychainTestnet } from './definitions/happychainTestnet.js'
 export { haqqMainnet } from './definitions/haqqMainnet.js'
 export { haqqTestedge2 } from './definitions/haqqTestedge2.js'
 export { hardhat } from './definitions/hardhat.js'